INFO:
Take on the special infected and common infected from left 4 dead 1
there are 4 songs from L4D that will play while you fight them
there are 4 common infected, 2 hunters, 2 smokers, a witch and a TANK that will try to kill you
they are at the question mark "?" icon on the 1st island, view "zombies location.jpg" for the location
if you manage to kill them all then they will come back once you go into the red sphere
adds a horror/spooky feel to the game
you do not get a wanted level while fighting them

CREDIT:
script by spidermight
witch and hunter models by mudvayne22
smoker and tank models by MrGameAZ
random zombies by BeeswaX